One 774f75 catheter and a non-ew contamination shield were returned for examination.The reported event of "balloon deflation problem" was not confirmed.The balloon inflated clear, concentric, and remained inflated for 5 minutes without leakage.No visible damage or deterioration was found from the balloon latex and balloon bonding sites.The balloon deflated within 2 seconds without the syringe, and the balloon did not deflate with the syringe attached.All through lumens were patent without any leakage or occlusion.No visible damage was observed from the catheter body or returned syringe.The reported event could not be confirmed or replicated during the analysis, as the device responded appropriately during functional testing.It is not known if some procedural factors may have contributed to the event.The techniques for insertion, methods of using the catheter to obtain patient data information, and the occurrence of complications are well described in the literature.Balloon deflation difficulty can result in an occlusion of blood flow and possible distal ischemia.Complaint histories for all reported events are reviewed against trending control limits on a monthly basis, and any excursions above the control limits are assessed and documented as part of this monthly review.
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